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Sudoku
(Easy)
Validate -
Test for any invalid entries. This does not check for incorrect entries. Invalid cells are hilighted in pink.
Check All -
This is a cheat button. It performs the 'Validate' above and then tests for incorrect entries. Any cell with the wrong number is hilighted in red.
Restart -
Resets the puzzle back to the original starting point.
Mark -
This allows you to bookmark the current puzzle state. You can have as many bookmarks as needed.
Back -
Restores the puzzle back to the latest bookmark.
Restore -
Restores the puzzle back to the latest bookmark and removes that bookmark from the stack.
Purge -
Clears all of the bookmarked save points.
Help -
Displays/Hides this help.
Easy,
Medium,
Hard,
Extreme -
Selects new puzzle and level.